Positiv Me 400 Task Extra High Back Black Office Chair (with armrests & lumbar pump)
This stocked version of the Positiv Me 400 Extra High Back Task Chair is a smart, supportive seating solution designed to promote comfort and healthy posture throughout the working day. Its sculpted, tri-curved high backrest is fully adjustable in height and angle, providing tailored support to the spine and encouraging a more upright sitting position.
Ideally suited to individuals with a very long back, the seat includes a double slide mechanism and a flexible front edge, allowing users to fine-tune their sitting position for better leg support and circulation. The inflatable lumbar support built into the backrest offers users the ability to easily adjust lower back support to their individual needs.
The chair comes equpped with 4D armrests which are height, depth and width adjustable helping to support the upper limb. A bodyweight-responsive tension mechanism ensures smooth and balanced reclining, adapting naturally to the user’s movements.
Finished in black and built with a durable base and smooth-glide castors, the Positiv Me 400 is a dependable, ergonomic choice for any modern office environment.
- Tension controlled central tilt mechanism
- Suitable for those with a very long back
- Independent backrest angle adjustment
- Ratchet back height adjustment
- Comfortable padded seat
- Double seat slide adjustment for flexible support under the thigh
- Clearly labelled adjustments
- Inflatable lumbar air cell
- 4D armrests - Height, depth and width adjustable
- Suitable for office and home environments
- Backrest length:
- 700 mm
- Backrest width (widest point):
- 500 mm
- Backrest adjustment:
- 710-790 mm
- Seat height (lowest):
- 490 mm
- Seat height (highest):
- 570 mm
- Seat pan width:
- 500 mm
- Seat pan length:
- 465 mm
- Seat pan (longest):
- 545 mm
- Seat pan (shortest):
- 420 mm
- Lumbar height:
- 145 mm
- Weight limit:
- 150 kg
- Seat tilt angle:
- 5° forward, 11° back
- Armrest (lowest):
- 150 mm
- Armrest (highest):
- 235 mm
- Armrest pad length:
- 240 mm
- Armrest pad width:
- 105 mm
- Armrest width adjustment:
- 435-475 mm
- Coccyx cut-out size (D x W):
- Not featured on this version
- Headrest/neckrest pad width:
- N/A
- Headrest/neckrest pad height:
- N/A
- Warranty:
- 5 years on structural parts
- 2 years on moving parts and fabric
- 1 year for 24 hour use
Q: How do I adjust the back angle of my Positiv Me 400 extra high back chair?
On the right hand side of your Positiv Me 400 there are 3 levers. The lever closest to your backrest adjusts the back angle. Lift the lever and adjust to a comfortable position. Once happy, release the lever to lock in place.
Q: My gas stem seems a little stiff – is this normal?
Sometimes, over time, the gas stem can become a little stiff when trying to adjust the height. A quick and easy fix for this is using WD-40 or Vaseline. Apply a light layer of grease to the gas stem, then try adjusting the gas stem 3-4 times. The gas stem should now adjust easily.
Q: Can my seat slide forward?
On the left hand side of your Positiv Me 400, you will find the seat slide lever. Lift the lever until you are happy with your position, then release the lever to lock in place.
Q: I have lumbar support in my backrest – how do I adjust this?
On the back of your Positiv Me 400 backrest there is a lumbar pump. Use the pump to inflate the lumbar support to optimal comfort.
If you need to deflate your lumbar, simply push the valve button on the pump.
Q: We have hot-desking and I want to adjust the backrest height – how do I do this?
Your backrest is on a ratchet height adjustment system. Simply lift the backrest to adjust the height of it.
Q: My seat pad is worn from years of use – can I just swap a new one for the old one?
You can swap the pads over. However, you will need to contact our customer services team on +44 (0) 345 345 0010 to arrange this, as this will need to be completed by one of our install technicians.
Still having problems?
Please give our customer services team a call on +44 (0) 345 345 0010.
